Dumping-car



X110 Model.)

2 Shets-Sheet 1. E. E. DWIGHT.

DUMPING OAR.

No. 417,239. Patented Dec.- 17, 1889.

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N, PETERS PhclmLiihagnphur. Washington, D. C.

UNITED STATES PATENT OFFICE.

EDVARD E. DVIGHT, OF TOLEDO, Ol'l'IO.

DUMPING-CAR.

SPECIFICATION forming part of Letters Patent No. 417,239, dated December17, 1889.

Application filed June 6,1889. fielial No. 313,391. (No model.)

To all whom it may concern:

Be it known that I, EDWARD E. DWIGHT, a citizen of the United States,residing at Toledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Dumping-Oars; and I dohereby declare that the following is afull, clear, and exact descriptionof the invention, which will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings,

and to the letters of reference marked thereon, which form part of thisspecification.

My invention relates to dumping'cars of that character in which the loadis discharged at the side of the car.

The object of the invention is to construct a car with a normally fiator horizontal bottom and sides hinged to close at right angles thereto,whereby to form a rectangular receptacle for the load, with means bywhich the longitudinal center of the bottom may be elevated to cause aninclination to the bottom from either side of the center, to cause theload to descend by gravity through an opening upon either side, causedby the outward swing of the hinged sides.

The invention consists in the parts and combination of parts hereinafterdescribed, and pointed out in the claims.

In the drawings, Figure 1 is a longitudinal vertical section of aportion of a car. Fig. 2 is a plan view of a sufficient portion of a carto illustrate the power mechanism for raising the floor of the same.Fig. 3 is a plan View of the worm-wheel, bedplate, and anti-frictionrollers journaled therein. Fig. 4 is a trans "verse section of the car,showing the floor in horizontal position upon the sills of the car; andFig. 5 is a like View showing the floor elevated to the highest pointand the doors swung outwardly to allow the load to discharge.

I-leretofore in the branch of the art to which my invention belongs ithas been found impossible to construct the floor of the car horizontalto allow of the car being used as a dumping-car or as an ordinaryfreight-car, for the reason that no power has been found adequate toraise the loaded floor or bottom from a horizontal to a sufficientincline to cause the load to discharge by gravity; hence all attempts ata construction of this character have failed of success.

In the construction herein described there is employed a series ofvertical screws so' connected with the floor and power mechanism that itis convenient and easy to raise the largest load within the car, andreadily cause the same to discharge at the side of the car.

a designates a central beam running longitudinally of and through thecenter of the car, and to which is secured the two sections D of thefloor by means of hinges b, secured to the beam a and to thefloor-sections.

A and B designate longitudinal floor-sills to which the transverseflooring is secured, and are so arranged that when the sections of floorrest upon the sills of the car they will register between the same.

0 designates a screw running through an internally -threadedspirallygeared nut 71,, sustained below the sills P of the car upon abed-plate S, sustained upon timbers O, secured to the sills P.

The bed-plate is formed with an annular channel concentric to thethreaded opening, into which is journaled a series of conicalanti-friction rollers r, which project. circunr ferentially above thechannel somewhat more than one-half their diameter, and project into acorresponding annular channel in the lower face of nut h, whereby toreduce the friction upon nut h to a minimum when being revolved.

g designates a worm-gear intermeshing with nut h, worm g being securedupon. shaft f, upon which is secured at the opposite end a bevel-gear c,which inter-meshes with a bevelgear e" upon a shaft e, extendinglongitudinally of the car, the ends thereof projecting beyond the endsill of the car sufficiently to allow a crank (Z and pawl and ratchet tobe secured thereon, by which means screw C is raised to cause the floorof the car to incline in each direction from the center and afterwardlowered to rest horizontally upon the base-timbers of the car, the screwbeing prevented from turning, and also firmly connected with the beam a,by reason of the upper squared end '2; being inserted into a squaredsocket J in a plate secured to the beam. NVhen the screw is in itslowest position, the lower portion is inclosed by a tube or'case n,secured below bed-plate S.

K designates a covering of wood or metal to prevent dirt, tc, fromlodging between the edges of the floor-sections and central beam.

tdesignates guides or ways secured upon the inner sides of the ends ofthe car, into which the ends of the beam to project to guide the samevertically when being raised or lowered. To complete the inclination ofthe bottom when raised to dump the load, there are secured planks itupon the two outer longitudinal sills w and 00, respectively, of eachside of the car, these planks being inclined coincidently with thesections D of the floor when raised and in a position for the lowerportion of each section to rest thereon, by which means the floor iscontinued to the edge of the car.

L designates the side doors of the car, of which there may be anydesired number, and are hinged at the top to the top rails m in a mannerto allow the doors to swing outwardly when not secured in closedposition against the outer edges of the floor-sections.

E designates a rod, journaled in the lower timbers of the car-frame andprojecting through the end sills sufficiently to allow a crank to beplaced upon the squared end E to revolve the same.

y are a series of grooved drums upon shaft- E, to which are securedropes or chains F, which are secured to metal bars G, fastened to thedoors, by which means, when the shaft is revolved to draw upon the ropeor chain F, the doors are securely closed, and may be so held by a pawlH and ratchet I, or in any preferred manner.

In each metal bar G is formed a notch G, which engages with a plate Gupon the side of the car to hold the doors open.

In operation, the floor being in horizontal position, rod E is turned tocause ropes or chains F to wind upon drums 1 and close the doors L, therod being secured from turning. The car is now loaded, and if with dirt,coal, or matter to be dumped, when the car is in proper position todischarge the load the rod E is allowed to revolve, permitting the doorsL to swing outwardly by reason of the pressure of the load against thesame, and allowing as much of the load as will fall by gravity to bedischarged, when upon turning crank (1, through the medium of gears e eand worm-gear g, the nut 71. is revolved, forcing the screw upward andwith it the beam a, (which is preferably a metal I-beam,) and by reasonof the hinged connection of the sections D of the bottom with the samethe bottom is caused to assume an inverted-V shape, with an angle ofabout thirty-five degrees, thereby causing the remainder of the load todischarge by gravity, after which the rod eis rotated in an oppositedirection, causing the nut h to lower the screw and with it the floor,whereupon rod E is revolved, causing ropes or chains F to raise themetal bars G from engagement with plates G and to drop into position,when the shaft is further revolved to cause sufficient tension of theropes or chains to secure the doors, the ratchet holding the samesecurely.

It will be seen that the entire lifting mechanism is out of the way andfully protected from breakage, and that any desired power may be broughtupon the screw to raise the bottom of the car with its load.

\Vhat I claim is 1. In a dumping-car, one or more verticallymovablescrews, geared centrally of the bottom, a central section of the floorconnectedwith the screws, and side sections of the bottom hinged to thecentral section, as and for the purpose set forth.

2. In a dumping-car, a floor composed of a central section, and sidesections hinged thereto, screws secured beneath the central section andtraveling in a centrally-threaded nut formed with a geared periphery, incombination with a worm-wheel intermeshing with the nut and revolved bymeans of a shaft longitudinally of the car, as and for the purpose setforth.

3. In a dumping-car, a floor formed of a central metal I-beam, sidesections hinged thereto, in combination with a series of screws securedto the metal beam, and threaded into revoluble nuts sustained upon aframing beneath the car, as and for the purpose set forth.

4. In a dumping-car, a floor formed of a central section and hinged sidesections, screws secured to the central section beneath the same andtraveling in centrally-threaded nuts formed with a spirally-gearedperipherv, a worm-gear intermeshing with each revoluble nut, thewormgear being driven by means of a shaft longitudinally of the car,upon which is secured a bevel pinion inter meshing with a bevel-gearupon the wormgear-shaft, as and for the purpose set forth.

5. In a dumping-car, the lower sills, a framing suspended from the same,a bed-plate secured upon the framing, anti-friction rollers upon theupper face of the bed-plate, and a revoluble nut mounted upon therollers, in combination with a screw traveling in the nut and connectedwith a central section of the carfloor having side sections hingedthereto, as and for the purpose set forth.

(3. In a dumping-car, in combination with an upwardlymovable floor,hinged doors, bars G, secured to the doors, each formed with a notch G,a metal plate G" upon the side of the car, a shaft journaledlongitudinally of the car and provided with drums, and ropes securedtothe drums, andbars G, as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereby affix mysignature in presence of two witnesses.

EDWARD E. DIVIGHT.

Witnesses:

WILLIAM WEBsTER, ANNA LEHANEY.

